Dipping rack



Patented Jan. 22, 1935 UNITED STATES DIPPING BACK Charles Bender, Brooklyn, N. Y.. assignor, by meme assignments, to Sanben Corporation, New York, N. Y a corporation of New York Beiiled for abandoned application Serial No.

. 593,477, February 17, 1932.

This application June 30, 1934, Serial No. 733,310

2 Claims.

The invention relates to a dippin rack particularly adapted for dipping photographic films to recover the silver contained in the coliodion coating as well as the celluloid base. It has for its main object to provide a rack of special construction which will support a large number of large, thin fihns in such a manner that all of the surfaces will come in intimate contact with 'the dipping solution and that the films will not come in contact with each'other, which would cause them to adhere to each other. Another object is to provide a rack oi simple, strong and inexpensive construction.

These and other objects and advantages will be readily understood from the following description and from the accompanying drawing, in which Fig. 1 is a side elevation of the rack, Fig. 2 a plan view with ports omitted, Fig.3anend view, and

Fig. 4 a sectional view taken on line 4-4, on P 8. 1.

Referring to all the views the rack consists of a bottom irame made up of two side bars 10 and 26 11, and two cross bars 12 and 13, which are welded, or otherwise secured, to the side .bars. A "plurality of intermediate bars 14 are also secured to the cross bars. The ends 15 and 16 of the side bars are bent downward and then angularly N upward so that the extreme ends meet as at 17 and 18, where holes 19 and 20 are drilled. The rack is suspended by a cable 26 which is engaged on the hook 2'] of a block and fall which is pending irom an overhead trolley 28 which rides onarailSO. Theblockandiallisnotshown. Onlargeracksaspacingbar 29isemployedto the rack. This spacing bar engages intheholesinthsupperendsoithesupporting members.

A plurality of spacing members are located transversely on the bottom frame. They are spacedonlyashortdistanceapartandeachconsists of an inverted U-shaped wire member 21,

legs of which are welded, or riveted to the side bars,andapluralityotintermediaterods 22'thelowerandsotwhicharesscm'edtothe intermediate bars 14, and the upper ends to the 1 U-shaped members.

The rack is used for the iollowing purpose: Films are placed in the spaces 23 formed between the spacing members 'and the rack is submerged 5 in a hot, caustic solution which removes the collodion with which the films are coated, as well as the silver compound contained in the collodion. The open construction 0! the rack assures intimate contact between the films and the solution, and the legs 24 and 25, which are formed by bending the ends 15 and 16, prevent the rack from settling into the sediment which collects in the dipping tank. They also serve as supports for the rack while it is being filled.

Having described my invention and its objects, what I claim-as new and wish to protect by Letters Patent is:

1. A dipping rack comprising, a base formed of side members and transverse end members, the ends of said side members bent downward to form legs and angularly upward to form two suspending members, a plurality oi. spaced bars placed parallel with the side members and supported on the end members, a plurality oi spacing members secured transversely on the base to form spaces for supporting individual films, and intermediate rods connecting said bars with the top oi said spacing members for preventing such films from contacting with each other when inserted in the spaces.

2. A dipping rack comprising, a base formed of side members and transverse end members, the ends of said side members bent downward to iorm legs and angularly upward to iorm two suspending members, a plurality oi spaced bars placed parallel with the side members and supported on the end members, a plurality of spacing members secured transversely on the base to form spaces for supporting individual films, intermediate rods connecting said bars with the top oi said spacing members for preventing such films from contacting with each other when inserted in the spaces, and a spacing bar inserted between the upper ends of the suspending members to the rack.

CEARLE BENDER... 

